Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D205/00—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom
  • C07D205/02—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings
  • C07D205/06—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
  • C07D205/08—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with one oxygen atom directly attached in position 2, e.g. beta-lactams
  • C07D205/09—Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with one oxygen atom directly attached in position 2, e.g. beta-lactams with a sulfur atom directly attached in position 4
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C67/00—Preparation of carboxylic acid esters
  • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
  • C07C67/307—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of halogen; by substitution of halogen atoms by other halogen atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C67/00—Preparation of carboxylic acid esters
  • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
  • C07C67/313—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of doubly bound oxygen containing functional groups, e.g. carboxyl groups
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
  • C07D499/88—Compounds with a double bond between positions 2 and 3 and a carbon atom having three bonds to hetero atoms with at the most one bond to halogen, e.g. an ester or nitrile radical, directly attached in position 2
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P20/00—Technologies relating to chemical industry
  • Y02P20/50—Improvements relating to the production of bulk chemicals
  • Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Nitrogen Condensed Heterocyclic Rings (AREA)
• Plural Heterocyclic Compounds (AREA)
• Cephalosporin Compounds (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=10672850

Family Applications (1)

Country Status (20)

Families Citing this family (1)

Family Cites Families (3)

• 1990
  • 1990-03-19 GB GB909006114A patent/GB9006114D0/en active Pending
• 1991
  • 1991-03-12 MY MYPI91000388A patent/MY105332A/en unknown
  • 1991-03-14 IL IL9754491A patent/IL97544A/en not_active IP Right Cessation
  • 1991-03-14 NZ NZ237433A patent/NZ237433A/en unknown
  • 1991-03-14 CZ CS91670A patent/CZ279485B6/cs unknown
  • 1991-03-15 YU YU45891A patent/YU45891A/sh unknown
  • 1991-03-15 IE IE086691A patent/IE910866A1/en unknown
  • 1991-03-16 CN CN91101599A patent/CN1054983A/zh active Pending
  • 1991-03-18 JP JP3505747A patent/JPH05505186A/ja active Pending
  • 1991-03-18 HU HU9202987A patent/HU212417B/hu not_active IP Right Cessation
  • 1991-03-18 EP EP91905778A patent/EP0521018A1/en not_active Ceased
  • 1991-03-18 WO PCT/EP1991/000522 patent/WO1991014691A1/en not_active Application Discontinuation
  • 1991-03-18 RU SU915053047A patent/RU2086553C1/ru active
  • 1991-03-18 PT PT97064A patent/PT97064B/pt not_active IP Right Cessation
  • 1991-03-18 ZA ZA911984A patent/ZA911984B/xx unknown
  • 1991-03-18 AU AU74926/91A patent/AU655172B2/en not_active Ceased
  • 1991-03-18 CA CA002078684A patent/CA2078684C/en not_active Expired - Fee Related
  • 1991-03-18 US US07/927,511 patent/US5360904A/en not_active Expired - Fee Related
• 1992
  • 1992-09-16 FI FI924154A patent/FI924154A0/fi not_active Application Discontinuation
  • 1992-09-18 NO NO92923631A patent/NO923631L/no unknown

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